510 Prof. J. O. AVestwood's descriptions of 



Genus ArsONA. 



Gcmis noYiim Panopi ot Lasim afllno, differt aiiteniiis 

 aj)ice longc aristatis; i)roboscide longitudine mcdiocri, 

 ccllulis duabus posticis basi e venula unica basali pedi- 

 cellatls. 



Caput rotundo-ti-ansversum ; oculis maxlmis antice con- 

 junctis, sctosis. Ocelli 3 in tubcrculum parvum positi, 

 vcrticales. Antenna3 in medio faciei insei'taj, articulis 

 duobus l)asallbus parvis, ultimo basi clongato-ovato, apice 

 in sctam longam tenuem ])rodiicto. Proboscis cloiigata, 

 thoracis longitudine, apice l)ilabiato. Ala3 venis fere ut in 

 I^dsid ct Panope dispositis, cellula autem curvata apicali c 

 venula tertia. postcostali pone cellulam angustam mediam 

 discoidalem emissa ; cellularpie triangulari etiam basi ]ic- 

 dicellata. Pedes gracilcs; abdomen fere globosum. Color 

 metallicus. 



Species unica Apsona muscaria. 

 (PL V. fig. 2 and details.) 



Valde convexa, nitida, sublente tenuissime corlacea, 

 cupreo-viridis, luteo-pubescens, proboscide et antennis 

 nigris, ])edibus luteo-flavis, femoribus in medio obscui'iori- 

 bus ; alis liyalinis, venis nigris. 



Long. Corp. lin. 4 ; probosc. lln. 2 ; expans. alar. lin. 82. 



Habitat in Nova Zelandla. In Mus. Hopeiano Oxoniae. 



Genus Leucopsina. 



Genus novum Panopi affine at structura abdominis 

 humerlsque thoracis proniinentibus diversum. 



Caput transvei'sum ; oculi maximi; antice sub anten- 

 narum basin conjunctl. Ocelli 3 vcrticales, ad junctionem 

 su])eram oculorum positi. Antennae frontales porrectai; 

 articulis 3, ultimo elongato subclavato. Proboscis longitu- 

 dine mcdiocris, ad aplccm thoracis infra extensa. Thorax 

 ovatus, convexus, angulis anticis gibbose lobatis. Abdomen 

 elongatum, segmento Imo in pedunculum angustato, seg- 

 mentis rellquis massam ovatam efficlentibus. Pedes 

 graciles; ala? mediocres, venis fere ut In Panope dispositis, 

 cellula apicali ad basin ejus antice appendiculo minuto 

 instructa. 



Leucopsina Odyneroides. (PI. V. fig. 3 and details.) 



Nigra, flavo-variegata, capite nigro, antennarum arti- 

 culis duobus basalibus flavis; thoracis angulis humcralil)us 



